#!/usr/bin/python

import sys
import os
import os.path
import subprocess
import shlex
import shutil
import base64

from poster.encode import multipart_encode
from poster.encode import MultipartParam
from poster.streaminghttp import register_openers
import urllib2

from optparse import OptionParser

register_openers()

breakpadSourceDir = os.environ['BREAKPAD_SOURCE_DIR']
breakpadUploadUrl = os.environ['BREAKPAD_UPLOAD_URL']
breakpadUserName = os.environ['BREAKPAD_USER_NAME']
breakpadUserPassword = os.environ['BREAKPAD_USER_PASSWORD']

if sys.platform == 'win32':
    nullfilename = 'nul:'
else:
    nullfilename = '/dev/null'
nullfile = open(nullfilename, 'r+b')


def stdoutFromProcess(process):
    (stdout, stderr) = process.communicate()
    if stderr:
        print stderr
        raise SystemError()
        sys.exit(1)
    return stdout

def toolPath():
    if sys.platform == 'linux2':
        dumpsymsPath = os.path.join(breakpadSourceDir, 'src/tools/linux/dump_syms/dump_syms')
    elif sys.platform == 'darwin':
        dumpsymsPath = os.path.join(breakpadSourceDir, 'src/tools/mac/dump_syms/build/Release/dump_syms')
    elif sys.platform == 'win32':
        dumpsymsPath = os.path.join(breakpadSourceDir,'src\\tools\\windows\\binaries\\dump_syms.exe')
    else:
        sys.exit(1)
    return dumpsymsPath

gitRootDirectoryCache = {}

def gitRootDirectory(path):
    directory = os.path.dirname(path)
    if directory in gitRootDirectoryCache:
        return gitRootDirectoryCache[directory]
    directoryList = directory.split(os.sep)
    while len(directoryList) > 0:
        gitDirectory = os.sep.join(directoryList + ['.git'])
        if os.path.exists(gitDirectory):
            gitDirectory = os.sep.join(directoryList)
            gitRootDirectoryCache[directory] = gitDirectory
            return gitDirectory
        directoryList.pop()

    return None


gitCommitShaCache = {}


def gitCommitSha(gitRootPath):
    if gitRootPath in gitCommitShaCache:
        return gitCommitShaCache[gitRootPath]
    gitProcess = subprocess.Popen(shlex.split('git rev-parse HEAD'),
                                  stdout=subprocess.PIPE,
                                  stderr=nullfile, cwd=gitRootPath)
    commitSha = stdoutFromProcess(gitProcess).strip('\n')
    gitCommitShaCache[gitRootPath] = commitSha
    return commitSha


gitRemoteRepositoryCache = {}


def gitRemoteRepository(gitRootPath):
    if gitRootPath in gitRemoteRepositoryCache:
        return gitRemoteRepositoryCache[gitRootPath]
    gitProcess = \
        subprocess.Popen(shlex.split('git config remote.origin.url'),
                         stdout=subprocess.PIPE, stderr=nullfile,
                         cwd=gitRootPath)
    repository = stdoutFromProcess(gitProcess).strip('\n')
    gitRemoteRepositoryCache[gitRootPath] = repository
    return repository


gitFilePathCache = {}


def populateFilePathCache(gitRootPath):
    if gitRootPath not in gitFilePathCache:
        gitProcess = \
            subprocess.Popen(shlex.split('git ls-files --full-name'),
                             stdout=subprocess.PIPE, stderr=nullfile,
                             cwd=gitRootPath)
        fileNameList = stdoutFromProcess(gitProcess).split('\n')
        filePathCache = {}
        for fileName in fileNameList:
            baseFileName = os.path.basename(fileName)
            filePathCache[baseFileName] = fileName
        gitFilePathCache[gitRootPath] = filePathCache


def gitFilePath(path, gitRootPath):
    if not gitRootPath:
        return path

    populateFilePathCache(gitRootPath)

    baseFileName = os.path.basename(path)
    filePathCache = gitFilePathCache[gitRootPath]
    if baseFileName in filePathCache:
        return filePathCache[baseFileName]
    else:
        return os.path.relpath(path, gitRootPath)


def isInRepository(path):
    gitRootPath = gitRootDirectory(path)
    if not gitRootPath:
        return False

    populateFilePathCache(gitRootPath)
    baseFileName = os.path.basename(path)
    if baseFileName in gitFilePathCache[gitRootPath]:
        return True
    else:
        return False


def sendSymbolsToServer(
    breakpadUploadUrl,
    symbolText,
    codeFile,
    debugFile,
    debugIdentifier,
    operatingSystem,
    cpu,
    ):
    (data, headers) = multipart_encode({
        'symbol_file': MultipartParam('symbol_file', value=symbolText,
                filename='symbol_file'),
        'code_file': codeFile,
        'debug_file': debugFile,
        'debug_identifier': debugIdentifier,
        'os': operatingSystem,
        'cpu': cpu,
        })
    request = urllib2.Request(breakpadUploadUrl, data, headers)
    auth = base64.encodestring('%s:%s' % (breakpadUserName,
                               breakpadUserPassword))[:-1]  # This is just standard un/pw encoding
    request.add_header('Authorization', 'Basic %s' % auth)  # Add Auth header to request
    result = urllib2.urlopen(request).read()


def generateSymbolFilesAndSend(binaryPath, projectPath):
    dumpsymsPath = toolPath()

    originalBinaryPath = binaryPath

    if sys.platform == 'darwin':
        dsymutilProcess = \
            subprocess.Popen(shlex.split('/usr/bin/dsymutil "'
                             + binaryPath + '"'), stdout=nullfile,
                             stderr=nullfile)
        dsymutilProcess.wait()
        binaryPath += os.path.join('.dSYM/Contents/Resources/DWARF/',
                                   os.path.basename(binaryPath))

    binaryPath = os.path.normpath(binaryPath)

    dumpsymsProcess = subprocess.Popen(shlex.split('"' + dumpsymsPath
            + '" "' + binaryPath + '"'), stdout=subprocess.PIPE,
            stderr=nullfile, cwd=projectPath)
    symbolList = stdoutFromProcess(dumpsymsProcess).split('\n')

    outputTextList = []
    codeFile = os.path.basename(binaryPath)
    debugFile = ''
    debugIdentifier = ''
    operatingSystem = ''
    cpu = ''
    moduleNotParsed = True
    for line in symbolList:
        line = line.strip('\n').strip('\r')
        if line[:4] == 'FILE':
            (marker, idnumber, filepath) = line.split(' ', 2)
            filepath = os.path.normpath(os.path.join(projectPath,
                    filepath))

            if isInRepository(filepath):
                gitRootPath = gitRootDirectory(filepath)
                commitSha = gitCommitSha(gitRootPath)
                repository = \
                    gitRemoteRepository(gitRootPath).replace(':', '/')
                relativeFilePath = gitFilePath(filepath,
                        gitRootPath).replace('\\', '/')
                outputTextList.append('FILE ' + idnumber + ' git:'
                        + repository + ':' + relativeFilePath + ':'
                        + commitSha)
            else:
                outputTextList.append(line)
        elif moduleNotParsed and line[:6] == 'MODULE':
            (operatingSystem, cpu, debugIdentifier, debugFile) = \
                line[7:].split(' ', 3)
            moduleNotParsed = False
        elif line:
            outputTextList.append(line)

    if moduleNotParsed:
        print 'Module not parsed'
        sys.exit(1)

    sendSymbolsToServer(
        breakpadUploadUrl,
        '\n'.join(outputTextList),
        codeFile,
        debugFile,
        debugIdentifier,
        operatingSystem,
        cpu,
        )

    if sys.platform == 'darwin':
        shutil.rmtree(originalBinaryPath + '.dSYM')


def testForBreakpad():
    try:
        dumpsymsPath = toolPath()
        if not dumpsymsPath:
            sys.exit(1)
        subprocess.Popen([dumpsymsPath], stdout=nullfile,
                         stderr=nullfile)
    except (OSError, KeyError):
        print 'No dumpsyms can be executed. Maybe  BREAKPAD_SOURCE_DIR is wrong.'
        sys.exit(1)
    sys.exit(0)


def main():
    usage = 'usage: %prog [options] binary projectpath'
    parser = OptionParser(usage=usage)
    parser.add_option('-v', '--verbose', action='store_true',
                      dest='verbose')
    parser.add_option('-e', '--breakpad-exists', action='store_true',
                      dest='testForBreakpad')

    (options, args) = parser.parse_args()

    if options.testForBreakpad == True:
        testForBreakpad()
    if len(args) > 1:
        generateSymbolFilesAndSend(args[0], args[1])
    else:
        parser.print_help()


if __name__ == '__main__':
    main()
